Square feet to acres
Multiply square feet by 0.0000229568 to get acres.
20,000 ft² = 0.459137 ac
How to convert square feet to acres
The acre is exactly 43 560 square feet (4046.8564224 m²). The square foot is exactly 0.09290304 m² (0.3048 m squared), by the 1959 agreement.
Worked example — 20,000 ft²: 20,000 × 0.0000229568 = 0.459137 ac.
Square feet to acres table
| Square feet | Acres |
|---|---|
| 1,000 ft² | 0.0229568 ac |
| 2,000 ft² | 0.0459137 ac |
| 5,000 ft² | 0.114784 ac |
| 10,000 ft² | 0.229568 ac |
| 20,000 ft² | 0.459137 ac |
| 43,560 ft² | 1 ac |
| 87,120 ft² | 2 ac |
| 100,000 ft² | 2.2957 ac |
| 200,000 ft² | 4.5914 ac |
Reverse and related
About square feet and acres
Square foot (ft²)
1 ft² = 0.0000229568 acDefinition. Exactly 0.09290304 m² (0.3048 m squared), by the 1959 agreement
History and origin
The square foot is the area of a square one foot on each side, tied to the international foot fixed in 1959. It equals exactly 0.09290304 square metres.
Current use
Square feet are the standard measure for real estate, flooring and carpet in the United States.
Source: NIST Handbook 44, Appendix C (area); 1959 yard-and-pound agreement
Acre (ac)
1 ac = 43,560 ft²Definition. Exactly 43 560 square feet (4046.8564224 m²)
History and origin
The acre began as the area a yoke of oxen could plough in a day, later fixed as 43 560 square feet, or one furlong by one chain. It equals about 4047 square metres.
Current use
Acres are the customary measure for land, farm plots and larger properties in the United States and United Kingdom.
Source: NIST Handbook 44, Appendix C (area); 1959 yard-and-pound agreement
Where people use this
Square feet: US real estate, flooring and carpet. Acres: land and farm plots, US real estate. 43 560 sq ft is exactly 1 acre.
Every value is carried to full double precision; the display is rounded.
Both units are defined in NIST Handbook 44, Appendix C (area); 1959 yard-and-pound agreement.
Questions people ask
How many acres is 1000 square feet?
1000 sq ft is about 0.023 acres. To convert square feet to acres, divide by 43,560.
How many acres is 10,000 sq ft?
10,000 sq ft is about 0.23 acres, and 43,560 sq ft is exactly 1 acre.
How many acres is a 5000 sq ft lot?
A 5000 sq ft lot is about 0.115 acres.